[C12][DT] PCIe: fix VREG_BYPASS control
The PCIe interface must be configured according to its voltage power supply with the dts parameter vph-supply.
REFERENCE: https://git.seco.com/arm/nxp/imx/develop/yocto/4.x/linux-seco/-/commit/68c75de07f8fd6356e93a58f870da57dab32c530 a2e09fd8